Gear-cutting mechanism.



No. 867,189. PATENTBD SEPT. 24, 1907. H. M. DARLING.

GEAR CUTTING MECHANISM.

APPLICATION FILED MAB. a. 1900.

5 SKEETS-SHEET 1.

. ATTORNEYS No.867,189. PATENTED SEPT. 24, 1907.

H. M. DARLING.

GEAR CUTTING MECHANISM.

APPLICATION FILED MAB. 6, 1900 5 SHEETS-SHEET 2.

wllm'll 1 IN ESES! IN NTOB n/IZ, 0 M,

ATTORNEYS PATENTED SEPT. 24, 1907.

H. M. DARLING. GEAR CUTTING MECHANISM.

APPLICATION FILED HA3. 6, 1900.

6 SHEETS-SHEET 3.

WITNESSES:

No. 867,189" PATENTBD SEPT. 24, 1907.

H. M. DARLING. GEAR CUTTING MECHANISM.

APPLICATION FILED MAR. 6, 1900.

5 SHEETS-SHEET 4.

WITNESSES: I h

ATTORNEYS PATENTED SEPT. 24, 1907.

H. M. DARLING. GEAR CUTTING MECHANISM.

APPLICATION FILED MAR. 6, 1900.

5 SHEETS-SHEET 5.

ATTORNEYS .UbTlTED STATES PATENT OFFICE.

HENRY M. DARLING, OF SENECA FALLs, NEW YORK, ASSIGNOR TO THE SENECA FALLS MA-Nu FAOTURING OOMPANY,OF SENECA FALLS, NEW YORK, A CORPORATION OF NEW. YORK.

GEAR-CUTTING MECHANISM.

Specification of Letters Patent.

Patented Sept; 24, 1907.

Application sad March 6,1900. Serial No. 7,451.

To all whom it may concern: 7

Be it known that I, Hnnnv M. DARLING, of Seneca I Falls, in the county otSeneca, in the State of New I ing a prefered construction of my invention. Fig. 2 is avertical sectional view taken on line 2-2, Fig. 1.

illustrated, the tool a is mounted on a suitable support, as a carriage A,and the gear or, article 13 is supported Yorl' ,have invented certain new and useful Improvements in Gear-Cutting Mechanism, of which the following is a specification. I

My invention has for its object the production of a mechanism for cutting or otherwise machining gears and other articles, which is particularly simple in construction, economical in manufacture, and strong, durable and effective in use; and to this end, it consists .in' the combination, .construction and arrangement of the" component parts of a mechanism for the desired purpose, as hereinafter fully described'and pointed out in the claims.

Referring to the'drawings, Figure 1 is a front elevation, partly in section, of portions of a machine embody- Fig. 3 is a top plan view of the detached cutter, its supporting means, and part of its driving means. Figs. 4, 5 and 6 are sectional views taken, respectively, on lines 4- -4, 55 audit- 6, Figs. 3 and 1.. Fig. 7 is a front elevation, partly in section, of portions of a' machine embodying a modified construction of my invention. Figs. 8, 9 and 10, are sectional views taken, respectively, on lines 8-8, 9-,9 and 10-10, Figs. 7 and 8. I

My invention consists,'essentially, of means for supporting and rotating 2. tool a, and means for varying the position of a gear or other' article B to be machined. As

between opposing spindles a a", mounted, respectively, in ,head and tail-stocks A! A", one spindle, as a, being live and the other being dead. The carriage A and the head and tail-stocks A A are of any desirable form,

size and construction, said carriage and tail-stock being adjustable lengthwise of the bed or frame A and the spindles a a by any suitable means, unnecessary to herein illustrate and describe.

The means for supporting the tool a usually consists of a movable support 0, and an arm C movable independently of said support. This supporting means is generally mounted on a carriage C movable on the carriage A crosswise of the axis of the spindles a a'. The.

support 0, as here illustrated, is provided with a'longi- -.tudinally split bearing 0 anda clamping member 0,

which is provided with a movable clamping shoulder 6- for decreasing the internal diameter of the split bearing 6, and with a pivotal head a movable in a guide a in the carriage C The arm 0 is provided with a hollow hub journaled in the bearing 0 and with a part projecting at an angle from said bearing 0 and provided with a hearing which is arranged at an angle to the bearing c and suitably supports a revoluble shaft 0 to which the cutter a is secured by any desirable means, unnecessary to herein illustrate and describe.

When the movable clamping shoulder c of the clam ing member 0 is in its inoperative position, the support 0. may be rocked on said clamping member, as

a pivot, thus moving the tool at toward the article B in a substantially horizontal plane, or in other words, in a plane substantially parallel to the axis of the spindles V a a and the arm 0 may be rocked in the bearing 0, thus moving the tool a toward the axis of the spindles a a in an are or curved plane arranged at an angle to said axis and the paths of movement or the carriage G On the contrary, when said movable clamping shoulder c is in its operative position, the support C and the arm l O are positively and firmly hold in their adjusted po- I sitions. The described means for supporting the tool a may be readily attached to any ordinary construction of lathe, since the pivotal head of the clamping memberfwhich holds said supporting means in position, is of such construction, as to enter the ordinary toolpost guide of the cross-feed carriage of a lathe.

The means for rotating the cutter 0. preferably consists of the shaft 0, previously described, a shaft D extending at substantially right-angles to the shaft 0 in the same general direction as the axis of the spindles a a and journaled in the hollow hub c of the arm 0,

a power-transmitting wheel d secured to one end of the shaft D, and additional power-transmitting Wheels, as bevelgears d 0 connecting the other end of the-shalt t. D to tllC ShtI-l l c. The power-transmitting wheel d,

is illustrated as a gear, but may consist of a pulley 1 driven by .a belt or other means, not shown. Said power-transmitting Wheel (1 is' generally connected to a suitable driving gear a by an intermediary gear (l'- mounted on a movable. arm d which is pivoted on the hub 0 and is held in its adjusted position by any dosirable means, as a clamping member engaged with the support 0 and passed through a slot in the arm LP. The gear a is usually fixed to the live spindle a, 95. and is provided with an engaging face of considerable width, so that the gears a (P will remain in engagement, even though the gear (i is movable lengthwise oi the bed A by the carriage A longitudinally split eye or bearing 6 for receiving the stationary or dead spindle (1' of the tail-stock, and 'as also provided with a clamping member 0 for reducing the internal diameter of the eye or bearing e and compressing the same upon the spindle (1 The powertransmitting wheel e consists of a worm-wheel which is journaled on the support E, is movable about the axis of the spindle a and is connected to the article 13 by any desirable means, as a lathe-dog e Said dividing wheel a is fixed to the, support E and is provided with suitable graduations, not illustrated, and with apertures e. The stop-arm e is provided with a plunger 0 or other means for entering the apertures e, and is mounted on a shaft e which is journaled in the support E and is connected by a Worm c to the powertransmitting wheel a. As thest'op-arm 6- is rotated step by step, the article B is correspondingly rotated and is held in its adjusted position.

In Figs. 7, 8, 9 and 10, I have shown portions of a lathe embodying a modified construction of my invention, in which the support 0" for the cutter a" is movablc directly on the carriage A and is prevent-ed from rocking horizontally toward the axis of the spindles a 11-. In this form of my invention, the cutter is usually'arrangial llUfllUltO'tllO carriage than in the construction of said invention previously described. The shaft a, upon which the cutter a is mounted, may

4 be adjustable vertically by a screw a and is connected to a shaft a by gears a a arranged in a chamber formed in the supporting arm a", in which said shaft a is journaled.

Either of the two described constructions of my invention, may be used in connection with the compound rest of a lathe, and it will be readily understood by those skilled in thcart that said inventionwlien so used, is particularly useful for performing various forms of bevcling or angling work, as cutting bevel or miter gears and milling angles.

The construction and operation of my mechanism Will now be readily understood upon reference to the foregoing description and the accompanying drawings, and as it is obvious that more or less change may be made in the component parts of said mechanism without departing from the spirit of my iiivention, I do not herein limit myself to the exact construction and ar rangement of said component parts.

Having thus fully described my invention, what I claim as new and desire to secure by'Lettcrs Patent, is:

1. The combination with opposing spindles for supporting an article to be machined, one spindle being live and the other dead; or a carriage. a rotary tool supported by the carriage. means for operating the tool from the live spindle. and mannally-opera ted .mcans associated with the dead spindle for rotating said article step by step, substantially as and for the purpose set forth.

1.. The combination with opposing spindles for support ing an article to be machined, one spindle being live and the other dead; of a carriage. arotary tool supported by the carriage. means connecting the live spindle and the tool for rotating said tool, means for adjusting, the tool toward and from the axis of the spindles independently of the carriage, and manually-operated means associated with the dead spindle for rotating said article step by step, substantially as and for the purpose described.

15. The combination with means for supporting an article to be machined, said means being revoluble intermittently for moving the article step by step, driving means revoluble about the axis of the supporting means, and a carriage; of a shaft supported by the carriage and extending in the same general direction as the axis of the supporting means. an arm mounted on the carriage and adapted to swing toward the axis of the supporting means on an axis substantially coincident with the axis of the shaft. said arm being provided with a tool, and power-transmit ting means for connecting the tool to the shaft, substantially as and for the purpose specified.

" 4. The combination with opposing spindles for supporting an article to be machined: of a carriage, a shaft supported'by the carriage, and extending in the same general direction as the axis of said spindles, an arm adapted to swing on an axis eccentric to the axis of said spindles and substantially coincident with the axis of the shaft toward and from the axis of said spindles, said arm -bcing pro vided with a tool. and power-transmitting means for'connecting the tool to the shaft, substantially as and for the purpose described.

The combination with opposing spindles for supporting an article to be machined, one spindle being live and the other dead; of a carriage, a shaft supported by the carriage and extending in the same general direction as the axis of the spindles, an arm mounted on the carriage and adapted to swing toward the axis of the spindles on an 'is substantially coincident with the axis of the shaft, id arm being provided with a tool, power-tirzmsmitting means for connecting the tool to the shaft, and powertrausmitting means for connecting the shaft to the live spindle, substantially as and for the purpose set forth.

6. The combination with Opposing spindles for supporting an article to be machined. one spindle being live and the other dead; of a carriage, a shaft supported by the carriage and extending in the same general direction as the axis of the spindles, an arm mounted on the carriage and adapted to swing toward the axis of thmspindles on an axis substantially coincident with the axis of the shaft, said arm being provided with a tool, power-transmitting means for connecting the tool to the shaft. po\vcr-transmitting means for connecting the shaft to the live spindle, and manually-operaied means associated with the dead spindle for rotating said article step by step, substantially as and for the purpose specified.

7. The combination with means for supporting an article to be machined, said means being revoluble intermittently for moving'the article step by step, driving means revohr ble about the axis of the supporting means, and a carriage provided with a bearing; of an arm journaled in the hearing and adapted to swing toward the axis of the supporting means independently of the carriage, a tool supported by the arm, and power-transuiitting means supported by the arm and connected to the tool and to said driving means. substantially as and for the purpose specified.

8. The combination with means for supporting an art lcle to be machined, said means being revoluble intermittently for moving the article step by step, driving means revoluble about the axis of the supporting means, and a carriage provided with a bearing; of an arm journaled in the hearing and adapted to swing toward the axis of the supporting means independently of the carriage and having a part projecting at an angle from said bearing; a tool supported by the angutruly-projecting part of the arm, and powertransmitting means supported by the arm and connected to the tool and to said driving means, substantially as and for the purpose set forth.

9. The combination with opposing spindles for supporting an article to be machined, one spindlebeing live and the other dead; of a carriage provided with a bearing, an arm journaled in the bearing and adapted to swing toward the axis of the supporting means independently of the curriage and having 'a bearing arranged at an angle to the bearing 'of the carriage, a shaft journaled in the bearing of the arm and provided with a tool, and power-transmitting means connected to the shaft and to the live spindle, sulr stantially as and for the purpose described.

10. The combination with means for supporting an article to be machined, said means being rcvoluble intermittently for moving the article step by step, driving means revoluble about the axis of the supporting means, and a carriage provided with a bearing; of an arm journaled in the bearing, and adapted to swing toward the axis of the supporting means independently of the carriage, angular-lyarranged shafts supported by the arm, a tool mounted on one of the shafts, and power-transmitting means for connecting theother shaft to the driving means, substantially as and for the purpose specified.

11. The combination with means for supporting an article to be machined; of a carriage, a support pivoted to the carriage and movable on its pivot, said support being provided with a bearing, an arm journaled in the bearing and adapted to swing toward the article to be machined independently of the carriage, a tool supported by the arm, a

single means for holding both the support and the arm in' their adjusted positions, and means for rotating the tool independently of said article, substantially as and for the purpose set forth.

12.,"lhe combination with means for supporting an article to be machined; of a carriage, a support provided with a split bearing, an arm adapted to swing toward the article to be machined independently of the carriage and having a hub journaled in the split bearing, a tool supported by the arm, a shaft journaled in the hub of the arm and connected to the tool, and a pivotal pin for the support, said pin being supported by the carriage and provided with means for clamping the support and the arm in their adjusted positions, substantially as and for the purpose described.

13. The combination with means for supporting an article to be machined; of a carriage, a bearing supported by the carriage, an arm having a hollow hub journaled in the hearing, said arm being adapted to swing toward the article to be machined independently of the carriage and being provided with a tool, a shaft journaled in the hollow hub of the arm and connected to the tool, an arm journaled on said hub and movable relatively to the former arm, and powentransmitting means carried by the relatively-movable arm and connected to the shaft, substantially as and for the purpose specified.

In testimony whereof, I have hereunto signed my name in the presence of two attesting witnesses, at Seneca .Fall; in the county of Seneca, in the State of New York, His -t day of March 1900.

HENRY M. DAP 'UING.

Witnesses:

C. F. HAMMOND, J. W. HAMMOND. 

